如下程序的输出是什么? #include <stdio.h> void Swap (int x, int y); int main() { int x = 1; int y = 2; printf ("x=%d,y=%d\n", x, y); Swap (x, y); printf ("x=%d,y=%d", x, y); } void Swap (int x, int y) { int temp; temp = x; x = y; y = temp; printf ("x=%d,y=%d\n", x, y); }
A.x=1,y=2 x=2,y=1 x=2,y=1
B.x=1,y=2 x=1,y=2 x=2,y=1
C.x=1,y=2 x=2,y=1 x=1,y=2
D.x=1,y=2 x=1,y=2 x=1,y=2